The actor was flying into LAX on Thursday for an event in Westwood, California, celebrating the premiere of Stranger Things 2 on Netflix.

Law enforcement officials found traces of cocaine on him, and he admitted to using the drug, according to law enforcement officials who spoke to THR.

"Foreign nationals may be inadmissible due to the commission of a crime involving drug possession," said Jaime Ruiz, the branch chief of strategic media engagement for U.S. Customs and Border Protection. "CBP officers treat all international travelers with integrity, respect and professionalism while keeping the highest standards of security."

The actor was not arrested, given the choice to revoke his application to enter the country and get back on a plane instead. However, it remains to be seen if he will suffer any consequences beyond this temporary denial.